What will you observe when:

(a) Some zinc pieces are put into copper sulphate solution?


(b) Some silver pieces are put into green coloured ferrous sulphate solution?

a) When zinc pieces are put into copper sulphate solution, the solution becomes colourless. The displacement reaction takes place. Zinc being more reactive than copper displaces it from its sulphate and as a result, zinc sulphate is formed. The reaction is:


Zn + CuSO4 ZnSO4 + Cu


b) When silver pieces are put into green coloured ferrous sulphate solution, the solution will become pale white. The displacement reaction is taking place here. Silver being more reactive displaces the iron from its sulphate and as a result, silver sulphate is formed. The reaction is:


Ag + FeSO4 AgSO4 + Fe


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